Geometric Sequence

The common ratio is _______from the preceding term to find the next term of a geometric sequence.

• added

• subtracted

• multiplied

• divided

Which of the following sequences illustrate a geometric sequence?

• -28, -24, -16, 12, …

• 1/32, 1/28, 1/24, …

• 32, -16, 8, -4, …

• 4, 8, 12, 16, …

What is the common ratio of the geometric sequence

1, 5, 25, 125, …?

• 5

• 1/5

• -5

• 15

The formula a_n = a₁ r^n-1 contains the following EXCEPT

_____________________

• Common ratio

• Common difference

• Term number

• First term

What are the next 2 terms of the geometric sequence -1, 2, -4, 8, …?

• -16, 32

• 16, -32

• -16, -32

• 16, 32

In the geometric sequence

81, 27, 9, … What is the common ratio?

• -3

• 3

• -1/3

• 1/3

What is the common ratio of this sequence ? 5, 25, 125, ...

• 4

• 2

• 5

• 6

Which of the following is a geometric sequence?

• 2, 4, 5, . . .

• 2, 6, 18, . . .

• 2, 4, 6, . . .

• 10, 20, 200, . . .

What is the common ratio of the geometric sequence -2, -8, -32, -128, ...?

• -4

• 4

• -2

• 2

What does r represent?

• Radical

• Common difference

• Common ratio